Cooling apparatus



- March 29, 1927.

N. H. HILLER COOLING APPARATUS Filed Jan.l9. 1926 WM ,5 7M WM ployed a plurality of units through which the cooling fluid, such for instance as brine,

PATENT. OFFICE.

NICOLAI H. KILLER, OF CABBOIIDALE, PENNSY LVANIA.

COOLING APPARATUS.

Application filed January 19, 1926. Serial No. 82,199.

:This invention relates to refrigerating or cooling systems in which there are emis circulated.

The main" object of my invention is to reduce the cost of piping, insulation, and labor involved in connecting up the'several units to the header or manifold which supplies the units with the refrigerating fluid.

In order that there'may be eflicient circulation of the cooling fluid through each unit which may be the brine cell of a refrigerator, it is necessary to provide separate inlet and outlet. passages for the brine cell. If the units are connected in parallel, it is necessary to have two separate headers and separate pipe connections from the unit to each. In some constructions it has been proposed to circulate the fluid through the units in series, in such case it being customary to provide two, separate pipe connections from the unit to the header, and provide the header with a valve or obstruction between the two pipe connections for'diverting the fluid through the cooling unit. In either construction, there is not only the cost of the twoseparate pipe connections and their separate insulations, but alsp the cost of the required careful and accurate workmanship in making the second connection after the first has been completed.

In my improved construction I secure" an eflicient circulation through each unit, and froma' single header or'manifold by means of a single pipe connection. Thus the cost of material for piping and insulation is reduced to one half, while the cost of installation is reduced to a far greater extent so far as concerns the labor involved in connecting up the unit to the header or manifold.

In the accompanying drawing, to which reference is to be had:

' header.

Although my invention may be employed in various types of circulating systems, I

have illustrated it in connection with a series of refrigeratops which may be supplied with brine from a single brine cooling apparatus.

In Fig. 1 I have shown a pair of refrigerators10, each having a brme cell'11 therein,

and each brine cell connected b a pipe 12 to the header or riser 13.

riser 13 has a T-coupling 14 therein, which is connected by a single pipe 15 to the brine struct the flow through the riser. This may have an opening therethrough, or at one side thereof, so as to permit a part of the brine to flow directly through without going to the brine cell.

lVithin the pipe 15 there is provided a second pipe 17 which is preferably of lead, although it may be rubber hose or other form of piping or tubing. One end of this inner tube 17 extends through the 'baflle 16 and may be expanded therein or fixed thereto in any suitable manner, so that its end opens .intoithe header 13 on the supply side of the bafile 16. The other end of the tube 17 extends into the brine icell and along the chamber thereof to a point spaced at a considerable distance from the end of the pipe 15. The end of the pipe 17 18 also directed away from the end ofthe pipe 15 in such a manner, depending upon the t of the brine cell, that brine delivered through the pipe 17 will be caused to circulate through the brine cell before escaping from the lat- My improved construction is preferably made substantially as shown in F g, 2. The

once may be taken up by slight alteration in the position of the brine cell or refrigerator. The inner pipe 16 does not have fluidtight connections at its inner end, and does not" need tov have its connection with the In'making the installation the exact positioning of the pipe 17 'is not important, nor is its exact length. By making it of flexible material it permits of a movement of the brine cell toward or from the riser in making tight the connections at the ends of the pipe 15. Any difl'erence'in the rate of, expansion of the pi es 15 and' 17 does not tend to loosen any 0 the joints.

Although I- have notshown any-insulation onthe header and the pipe- 15, it will of course be understood that such insulation is used. *With'only a single pipe connected to the brine cell, the cost of material and l total cooling fluid which it is desired to dilabor in making the connection as well as applying the insulation, is very materially, reduced, but the desirpd forced circulation through the brine cell is accomplished. Although I have shown the pipe 17 concentric with the pipe 15, it will of course be understood that this is not essential, as the, pipe, or a portion of it, may rest on the inner surface of the lower side of the pipe 15.

It will be noted that the partition or bafiie 16 has two openings therein, one for direct flow through the header and the other for the flow through the pipe 17. The relative areas of these openings may be varied, depending upon the relative amount of the vert from the header through the particular brine cell. Instead of the pipe 17, I might in some cases provide the pipe 15 with a longitudinally extending partition, one end of which wouldbe connected to or engage with the partition 17 between the two holes of the latter, and the other end of which might be curved down into the brine cell or otherwise formed or connected so as to effectthe desired forced circulation through the brine cell. If it is desired to deflect all of the liquid through the brine cell, obviously the opening shown at the left of the partition 16 in Fig. 2 might be entirelymmitted. Obviously 1f the flow through the header be in the opposite direction to that shown by the "arrows, the pipe 17 will serve to withdraw brine from the brine cell, rather than deliver it thereto.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In combination a header, a cooling unit, a single pipe connecting said header and said unit, a second pipe within said first, mentioned pipe and having one end terminating in said header and the other in said cooling unit and means at the first mentioned end of the secondpipe for directing into said second pipe liquid from said header, whereby liquid flows from said header through said second pipe to said cooling unit, and thence back to said header through said outer pipe;

2. In combination a header, a cooling unit, a single pipe connecting said. header and said unit, a second pipe within said first mentioned pipe and having one end terminating in said header and the other in said cooling unit at a point spaced from the end of of said pipes.

3. In combination a header, a brine cell,

a single pipe connecting said header and brine cell, a bafiie within said header and provided with an aperture therethrough, and a second pipe within said first mentioned pipe and having one end extending through and supported by said bafiie, and the opposite end di=posed within said brin'ec'ell.

4. In combination a header having a T- coupling provided with a bafiie, a brine cell, a pipe connecting said T-coupling and said brine cell, and a second pipe within said first mentioned pipe and having one end opening through said batfie.

5. In combination a header having a partition therein provided with a pair of openings, 'a brine cell a pipe connecting said header and said brine cell, and a second pipe within the first mentioned pipe and having one end terminating within-the brine cell and. the other end connected to oneof the openings of said bafile.

6. In combination a header having a partition therein provided with a pair of openings, a brine cell, a pipe connecting said header and said brine cell, and means within &aid piped or subdividing the interior of the pipe into a pair of passages, both passages eonnected to said brine cell, and one connected to one of the openings of said partition.

7. In combination a header having a T- coupling provided with a transverse partition at one side of the stem of the T, and provided with a pair of openings therein, a brine cell having a brine circulating chamber, a pipe connecting said chamber and the stem of said T-coupling, and a second pipe extending lengthwi'e of the first mentioned pipe and within the latter, one end of said second mentioned pipe extending through one of the openings of said partition and expanded therein, and the other-end of said second mentioned pipe extending downwardly in said brine chamber to a point spaced from and directed away from the end .Of said first mentioned pipe.

Signed at Carbondale in the county of Lackawanna and State of Pennsylvania this 16th day of January, A. D. 1926.

NIooLAI H. HILLER. 

